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New York Production Honeycrisp
is susceptible to fireblight during establishment years (Rosenberger, 2003).
It is also susceptible to sunburn and heat injury (Rosenberger, 2008).
Growers may consider using overhead cooling to protect crops during August
heat waves. Use NAA
at 5 ppm or 2.5 ppm NAA plus 1 pint of Sevin XLR per 100 gal to thin fruit at
10-12 mm (0.4-0.48 inch) growth stage (Schupp, 2003). However, may not get
adequate return bloom with thinning at this stage. For stronger thinning, use
5 ppm NAA plus 1 pint Sevin XLR per 100 gal. Cropload
affects fruit size, return bloom, leaf chlorosis, fruit soluble solids
content, fruit color, and fruit storage quality (Robinson and Watkins, 2003).
For fruit between 200-250 g (7-8.75 oz), aim for a cropload of less than 5
fruits per cm2 trunk cross-sectional area. As
cropload increases, the following will decrease: In
addition, as crop load increases, so does soggy breakdown. Honeycrisp
is susceptible to black and white rots (Rosenberger, 2003). Apply fungicides
(Topsin, captan, strobilurins) after petal fall and in late summer. Apply
CaCl2 throughout growing season to reduce bitter pit incidence (Rosenberger
et al., 2003). Use at least 6 applications of at least 3 lbs per acre (3.4 kg
per ha) of elemental calcium sprayed to drip with 100 gal per acre
(Rosenberger et al., 2004). Harvest Early
harvest causes an increase in bitter pit and fruit firmness (Robinson and
Watkins, 2003). Late harvest causes an increase in rot, soggy breakdown, soft
scald. For Lake
Champlain region, ideal harvest would start 2nd or 3rd week of September
(Watkins et al., 2003). Fruit should have starch index of less than 6 on the
Cornell scale for long-term storage. For
western NY, optimum harvest period is 2nd-4th week of September (Wargo and
Watkins, 2003 and 2004). Maturity can fluctuate from year to year. Spot pick
fruit 3-4 times during harvest window, when starch index is 7 on the Cornell
scale, with a minimum firmness of 13.5 lbs and 13% soluble solids content.
Skin cracking can be a problem in late harvested fruit, so if rain is
predicted, harvest before rain starts falling. Preharvest fruit drop is not a
major problem. Storage Use
delayed cooling of 10-20 °C (50-68 °F) for 1 week prior to long-term storage
at 3.5 °C (38 °F). However, this may increase levels of bitter pit (Watkins
et al., 2004), senescent breakdown, and rot (Robinson and Watkins, 2003).
Warmer storage temperatures will decrease incidence of soggy breakdown, soft
scald, and superficial scald. CA storage is not yet recommended for NY-grown
Honeycrisp. Honeycrisp is susceptible to
Penicillium blue mold (Rosenberger, 2003). Sanitize bins, packing areas, and
storage rooms, and keep fruit away from bins and areas contaminated with blue
mold References Chen, L.,
Cheng, L. 2004. CO2 assimilation, carbohydrate metabolism, xanthophyll cycle,
and the antioxidant system of 'Honeycrisp' apple leaves with zonal chlorosis.
J
Amer Soc Hort Sci. 129:729-737. Robinson,
T., Watkins, C. 2003. Cropload of Honeycrisp apple affects not only fruit
size but many quality attributes. NY Fruit Quarterly 11. Rosenberger,
D. 2003. Managing diseases and arthropod pests on Honeycrisp. N.Y. Fruit
Quarterly 11(3):13-15. http://www.nyshs.org/fq/03fall/NYFQFall2003.pdf Rosenberger,
D.A. 2006. Early August heat affects Honeycrisp fruit. Scaffolds Fruit
Journal 15(24):3-4. http://www.nysaes.cornell.edu/ent/scaffolds/2006/060828.html#disease
Rosenberger,
D., J. Schupp, C. Watkins, K Iungerman, S. Hoying, D. Straub, and L. Cheng.
2001. Honeycrisp: promising profit maker or just another problem child? NY
Fruit Quarterly 9(3):9-13. http://www.nyshs.org/fq/fall01/FQfall2001.pdf Rosenberger,
D., Schupp, J., Hoying, S., Cheng, L., and Watkins, D. 2003. Managing bitter
pit in Honeycrisp. N.Y. Fruit Quarterly 11(3):17-21. http://www.nyshs.org/fq/03fall/NYFQFall2003.pdf
Rosenberger,
D., Schupp, J., Hoying, S., Cheng, L., and Watkins, C. 2004. Controlling
Bitter Pit in 'Honeycrisp' Apples. HortTechnology. 14(3):342-9. zHC Bitter pit -Ca
sprays HortTech .pdf Rosenberger,
D. 2003. Susceptibility of new apple cultivars to common apple diseases. N.Y.
Fruit Quarterly 11(2):17-22. HC
Disease suscep-NYFQ-03.pdf Rosenberger,
D. 2004. Fruit decay problems in Honeycrisp. Proc. New Engl. Fruit and Veg.
Conf. Manchester, NH. Dec. 15-16. HC summer decays extn article.pdf Schupp, J.,
Fallahi, E., Chun, I. 2002. Effect of particle film on fruit sunburn,
maturity and quality of 'Fji' and 'Honeycrisp' apples. XXVI Intern Hort
Congress. Wargo, J., Watkins, C. 2004. Maturity and storage quality of
'Honeycrisp' apples. HortTechnology. 14:496-499. Watkins,
C., Nock, J., Weis, S., Jayanty, S., Beaudry, R. 2004. Storage temperature,
diphenylamine, and prestorage delay effects on soft scald, soggy breakdown
and bitter pit of 'Honeycrisp' apples. Postharvest Biol Tech. 32:213-221. Watkins,
C., Erkan, M., Nock, J., Beaudry, R., Moran, R. 2005. Harvest date effects on
maturity, quality, and storage disorders of 'Honeycrisp' apples. HortScience.
40:164-169. Watkins,
C.B. and Nock, J.F. 2012. Controlled atmosphere storage of 'Honeycrisp'
apples. HortScience in press.
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